Calculating Transmission Ratio i

Calculating Transmission Ratio i

Example:






I= Z2 : Z1 1

iG = gear ratio = ZG2 : ZG1 = 29:39 = 0.744

iA = axle ratio = ZA2 : ZA1 = 61:18 = 3.389

itotal = total ratio = iG x iA= 0.744 x 3.389 = 2.521

• 1 Z1 = Number of teeth on the drive gear, Z2 = Number of teeth on the driven gear